The Aprilaire 8448 Digital Heat/Cool or Heat Pump Multi-Stage Thermostat is a non-programmable electric thermostat. The universal modes of the Aprilaire 8448 controls single stage, multi-stage, heat pump, millivolt, standard gas, oil, and electric systems. The Aprilaire 8448 features a large LCD screen for easy reading, easy to install terminal block, dual-powered (wired or battery powered), Fahrenheit and Celsius settings, soft touch keys, and permanent memory retention in the event of a power failure. The Aprilaire 8448 can also display the outdoor temperature allowing you to make any adjustments necessary adjustments to your scheduled programming (requires an Aprilaire 8052 outdoor temperature sensor, sold separately). The simple set-up menu also allows you to activate other optional features, allowing you to take full control of the thermostat.

Aprilaire 8400 Series thermostats have an Integrated Auto-Changeover Mode for Heating & Cooling